Record-producing device



f 2 Sheets-Sheet 1 A. LINDNER REcoRD PRODUCING DEVICE Filedsept. 17j' 1923 mi I J April 14, 1925.

April 14, 1925. 1,533,561

A. LlND NER `RECORD PRODUCING DEVICE FildASept. 17, 1925 2 Sheets-Sheet 2 /QLJ-L@ @HLM/tmf Patented pr. 14, 1925.

UNITED STATES 1,533,561 PATENT OFFICE.

ARTHUR LINDNER, F NEWPORT NEWS, VIRGINIA, ASSIGNOR O'F ONE-I-IALF TO RAY- MOND M. BROWN, OF NEWPORT NEWS,l VIRGINIA.

RECORD-PRODUCING DEVICE.

' Application led September 17, 1923. Serial No. 663,229.

To all whom it may concern:

Be it known that I. ARTHUR LiNDNER, a citizen of the United States, residing at Newport News, in the county of VarWiCk, State of Virginia, have invented certain new and useful Improvements in Record- Producing Devices, of which the following is a specification.

The invention relates primarily to record producing devices, although it may also be applied to a sound reproducing machine.

One of the objects of the invention is to provide an improved means for positively conveying the sound box stylus', and parts connected thereto, across the face of the record disk at a speed proportional to the speed of rotation of the disk.`

A further object is to provide a yielding drive for the sound box and the accompanying mechanism, in order to a-llowfor abnormalities in the record and to avoid mechanical sounds where the device is used for sound reproducing.

Another object of the invention is to provide a yielding connection between the sound box and horn, where a horn is used.

A. further object is to provide means for .vertically adjusting the stylus or needle.

Still other objects are to provide tensioning means for the yielding driving ymechanism, and to provide means for automatically releasing. the sound box from the driving mechanism at a predetermined position.

An illustrative embodiment of the invention is shown in the accompanying drawings ing the stand upon which the sound box and Aoperating mechanism are mounted.

Figure 4 is a side eleva-tion showing the whole mechanism assembled.

Figure 5 is an elevation of the yielding connections sho-Wn in Figure 2. i

Figure 6 is a central vertical'section showing the connections between the Adisk rotat ing shaft and the belt which operates the sound box transversely of the record.

Referring particularly to Figi'ires 1 and `4, the reference numeral 10 denotes amotor vsound box across the record. The stand 14 rests upon the top ofthe motor box 10 and is preferably provided with feet 15 which project beneath the rotating table 12.

As shown, a bracket 16 is pivoted to the stand 14 and is provided with two pairs of ears 17 and18, in which are supported guide rods 19, 20, arranged one above the other, and supported at their opposite ends two similar pairs of ears 21, 22, carried upon a gear casing 23, the weight of which is supported through a suitable rotating shaft 24', and other mechanism more fully .described hereinafter, upon the projecting end of the main drive shaft 11. Slidably mounted upon the guide rods 19 and 20 is a carriage,

'designated generally by the reference number 25, which carries the sound box 26 and horn 27. This carriage is adapted to be moved across the record by means of a flexible endless belt 28, supported upon pulleys 29 and 30. The carriage 'may be secured to the belt by means of a clamp 31,.or may be rendered independent of the belt by re. leasing the clamp.

As shown, the belt is driven by means of the pulley 30, which is mountedupon the shaft 32 of a gear wheel 33 (Fig. 6) mounted within the gea-r casing 23. The gear 33 1s driven by means of a worm 34 meshing therewith and carried by a sleeve 35 revoluble within a vertical offset portion 36 ofthe gear casing. The shaft 24 is mounted within the sleeve 35 and is splined thereto by means of a key 36, which operates `in a keyway 37 formed in the shaft. The shaft 24 is adapted to be adjusted vertically through a distance equal to the length of the keyway 37 and for this purpose its upper end is threaded as at and fits within a threadedadj'usting Y "sleeve 61. For turning the shaft 24 a screw 38 is screwed tight into the upper end of the shaft forming a rigid connection therewith. The screw is' provided with a shoulder 62 which lits within a recess 63 in the top of the adjusting sleeve. By turning the screw 38 the shaft 24 is adjusted vertically withiny the sleeve 61. I n this manner the .gear box and the entire support can be raised or lowered to conform with the different heights of the turn table spindle ends, so that the sound box carriage will travel parallel with the record. I

The sleeve 35 is held within the casing 36 by means of a locking pin 39, which fits in a groove 40 formed near the end of the sleeve. At the end of the shaft 24 there is formed a nipple 4,1 adapted to engage the upper end of the disk rotating shaft 11, and thereby transmit motio-n through the worn 34, gear 33, and belt 28 to the sound box carriage 25, which is therefore moved transversely of the record disk with a speed which `is proportional to the speed at which the record. is being rotated.

The nipple 41 is preferably provided with a rubber friction ring 64.by means of which a non metallic friction connection is made between the turn table spindle shaft 11 and the worm drive shaft 24.

lVhen the sound box has been carried to a predetermined position itis desirable that it be automatically disengaged from the conveyor belt in order to prevent marring the record. To this end a stop 41 inthe form of a hook secured` to the guide rod 19 is provided. Vhen the carriage 25 has reached the limit of its travel thearm 42 of the clamp 31 strikes this stop, thereby releasing the clamp and disengaging the carriage from the belt.

Itis also desirable that the tension of the belt may be adjusted. For this vpurpose adjusting screws 43, 44 are provided by means of which the bracket 16 carrying the pulley 29 may be adjusted with respect to the guide rods 19, 29T thus varying the dis-i.

tance between the pulleys 29 and 30,'and

tensioning or slacking the belt. ,j

Another important feature of the present linvention is the yielding connection between the sound box 26fand horn 27, byA

means of which the sound box is permitted to move in all directions witho-ut interfering with the 'position of the horn.

As shown in Figures 2 and 5, the horn 27 is received in a. socket 45 formed in the carriage 25. The bottom of the socket is rounded as at 46. The sound box 2 6 is provided with an upwardly extending tubular projection 47 adapted to-receive the lower endof a loosely` mounted tubular connector 48, the upper end of which is enlarged to t the rounded portion -46 of the horn socket,

thus forming what is in substance a lball and socket joint between the sound box and horn.

In order that the sound box may move with the carriage 25 and be at the same time adjustable-relative thereto, the carriage is provided with a laterally extending bracket arm 49 having a socket 50 therein. An arm 51 is forme-dintegral with the socket 45 of the sound box, this arm being hingedly Connected at its outerend to an upright rod 52 which is adapted to fit in the socket 50, and to be secured in adjusted position by means of a clamping screw 53.

It is also desirable that the stylus carried by the sound box beraised from the record disk when the sound box carrier 25 has reached the limit of its travel.. According to the present invention this is, accomplished automatically by the same mechanism, which, releasesthe carriage from the belt.l As shown, the lever arm 42, which operates the clamp v31 is provided at its lower end with an outwardly curved arm or cam54. Vhen the lever arm 42 engages the stop 41', the cam arm 54 engages an upwardly extending post 55 formed rigid wlth the lateral arml of the sound box, forcing it to the position shown in Figure 2, and thereby raising the stylus from the record disk.

The invention has been described with great particularity for the purpose of illustration, but it is to be understood that .it may be varied din many details without departing from thespirit o f the invention which is to be limited only by the following claims.

What I claim is:

1. In a sound reproducing and recordin device, in combination, a rotatable recor disk, a transverse guide member mounted vabove saidf disk, a sound box carriage mounted-upon said guide member, a travelling belt, releasable means for clamping said carriage to said belt, and afstop secured to said guide member adapted to cooperate with said clamping means for releasing said carriage from said belt.

L2.' In a `sound reproducing and recording device, in combination, a rotatable record disk, fixed transverse guide rods mounted above said disk, a sound box carriage mounted u on` said guide rods, means for I moving said' carriage transversely of said record d1sk, a stop for l1m1t1ng the movement of said carnage, andseparate means operated `by said stop forautomatically renderingithe sound box inoperative at the end of said transverse movement.

3. In a sound reproducingand recording device, in combination, a sound box having an upwardly extending tubular projection, a sound box carriage .having a. horn-receiv- .ing socket formed therein, said socket hav- 111g aball seatat its bottom, and a yielding 130 'I is enlarged and lits loosely `in the ball seat of the horn socket, the lower end fitting loosely and rotatably into and slidable relatively to the tubular projection yon said sound box, thus forming substantially a ball and socket horn.

4f. In a sound reproducing and recording device, in combination, a rotatable record disk, a transverse guide member mounted above said disk, a sound-box carriage mounted upon said guide members, a sound box carrying a-stylus, and yieldingly connected to Vsaid carriage, a belt, releasable means for clamping said carriage to said belt, a stop secured to said guide member, and adapted to engage said clamping mein-v ber for disengaging said carriage from said bolt at a predetermined oint,and an upf right arm rigidly secure with said sound bo'x adapted to engage a cam on said clamping mec anism, 'whe'reby saidstylus is renjoint between the sound boxoand dered inoperative when the sound box carriage is released from the Itravelling belt.

5. In =a sound recording and reproducing device, including a record disk mounted for rotation upon a vertical drive shaft, a sound box carriage and means for transmit-- ting, motion from said drive shaft to said carriage including al second shaft threaded at its upper end, and having a nipple at its lower end adapted to fit over the upper end of sai'd drive shaft,` a sleeve rotatably mounted ina suitable casing surrounding an iinthreaded portion of said second shaft, and having a key and slot connection therewith, gearing on said sleeve cooperating with suitable mechanism for driving said sound box carriage and means for vertically adjusting said second ashaft comprising a threaded adjusting sleeve cooperating with the threaded portion of said shaft, a shoulder at the upper portion of said adjusting sleeve, and an adjusting screw cooperating with said shoulder and said shaft.

In testimony whereof I alix my signature.

' ARTHUR LINDNER. 

